Abstract: An acoustic wave device includes: a support substrate; a first piezoelectric substrate bonded to a first principal surface of the support substrate, the first piezoelectric substrate being a single crystal substrate, a first acoustic wave resonator located on an opposite surface of the first piezoelectric substrate from a surface to which the support substrate is bonded, the first acoustic wave resonator including an IDT; a second piezoelectric substrate bonded to a second principal surface of the support substrate opposite from the first principal surface, the second piezoelectric substrate being a single crystal substrate; and a second acoustic wave resonator located on an opposite surface of the second piezoelectric substrate from a surface to which the support substrate is bonded, the second acoustic wave resonator including an IDT.

Abstract: An authentication system includes: an information processing apparatus configured to acquire, from a read result of an authentication image indicating authentication information, the authentication information; and a terminal apparatus configured to communicate with the information processing apparatus. The terminal apparatus includes: a communication unit configured to perform wireless communication with the information processing apparatus; a first determining unit configured to determine whether the terminal apparatus is positioned within a second communication range in which a distance from the information processing apparatus is a threshold or less, within a first communication range that enables wireless communication with the information processing apparatus; and a display controller configured to perform control to display an authentication screen containing the authentication image on a display unit when it is determined that the terminal apparatus is positioned within the second communication range.

Abstract: An acoustic wave device includes: a support substrate; a first piezoelectric substrate bonded to a first principal surface of the support substrate, the first piezoelectric substrate being a single crystal substrate, a first acoustic wave resonator located on an opposite surface of the first piezoelectric substrate from a surface to which the support substrate is bonded, the first acoustic wave resonator including an IDT; a second piezoelectric substrate bonded to a second principal surface of the support substrate opposite from the first principal surface, the second piezoelectric substrate being a single crystal substrate; and a second acoustic wave resonator located on an opposite surface of the second piezoelectric substrate from a surface to which the support substrate is bonded, the second acoustic wave resonator including an IDT.

Abstract: An authentication system includes: an information processing apparatus configured to acquire, from a read result of an authentication image indicating authentication information, the authentication information; and a terminal apparatus configured to communicate with the information processing apparatus. The terminal apparatus includes: a communication unit configured to perform wireless communication with the information processing apparatus; a first determining unit configured to determine whether the terminal apparatus is positioned within a second communication range in which a distance from the information processing apparatus is a threshold or less, within a first communication range that enables wireless communication with the information processing apparatus; and a display controller configured to perform control to display an authentication screen containing the authentication image on a display unit when it is determined that the terminal apparatus is positioned within the second communication range.

Abstract: An image forming apparatus includes: an acquisition unit that acquires visitor information regarding a visitor and notification destination information indicating a destination of notification to a visitor-receiving person who is to receive the visitor; an issuance unit that, based on the visitor information acquired by the acquisition unit, issues a permit indicating that the visitor is allowed to enter; and a notification unit that notifies the destination of notification indicated by the notification destination information acquired by the acquisition unit that the visitor has arrived.

Abstract: An image forming apparatus includes: an acquisition unit that acquires visitor information regarding a visitor and notification destination information indicating a destination of notification to a visitor-receiving person who is to receive the visitor; an issuance unit that, based on the visitor information acquired by the acquisition unit, issues a permit indicating that the visitor is allowed to enter; and a notification unit that notifies the destination of notification indicated by the notification destination information acquired by the acquisition unit that the visitor has arrived.